Can not find clip.exe when running in docker con

[mdeweerd]

Apparently the following code
detects "Microsoft" in /proc/version and assumes it can access clip.exe.

However, that is not the cas in the docker container running under docker on a windows machine. The docker container has a virtual display itself and provides the clipboard.

So I think the detection needs to be fine-tuned.

pyperclip/tests/test_pyperclip.py

Lines 119 to 123 in e16fa9c

	class TestWSL(_TestClipboard):
	if platform.system() == 'Linux':
	with open('/proc/version', 'r') as f:
	if "Microsoft" in f.read():
	clipboard = init_wsl_clipboard()

The goal of docker is to not give away that the application is running in docker and they suggest to set a variable.

However I found:

/etc/resolv.conf:# Generated by Docker Engine.
/etc/resolv.conf:# This file can be edited; Docker Engine will not make further changes once it

/proc/mounts:overlay / overlay rw,relatime,lowerdir=/var/lib/docker
/usr/local/bin/docker-entrypoint.sh: